diff options
Diffstat (limited to 'include/llvm/CodeGen/MachineRegisterInfo.h')
| -rw-r--r-- | include/llvm/CodeGen/MachineRegisterInfo.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/include/llvm/CodeGen/MachineRegisterInfo.h b/include/llvm/CodeGen/MachineRegisterInfo.h index abb04de..001d09f 100644 --- a/include/llvm/CodeGen/MachineRegisterInfo.h +++ b/include/llvm/CodeGen/MachineRegisterInfo.h @@ -182,7 +182,18 @@ public: /// information. void invalidateLiveness() { TracksLiveness = false; } - bool tracksSubRegLiveness() const { return TracksSubRegLiveness; } + /// Returns true if liveness for register class @p RC should be tracked at + /// the subregister level. + bool shouldTrackSubRegLiveness(const TargetRegisterClass &RC) const { + return subRegLivenessEnabled() && RC.HasDisjunctSubRegs; + } + bool shouldTrackSubRegLiveness(unsigned VReg) const { + assert(TargetRegisterInfo::isVirtualRegister(VReg) && "Must pass a VReg"); + return shouldTrackSubRegLiveness(*getRegClass(VReg)); + } + bool subRegLivenessEnabled() const { + return TracksSubRegLiveness; + } void enableSubRegLiveness(bool Enable = true) { TracksSubRegLiveness = Enable; @@ -829,7 +840,6 @@ public: typedef std::iterator<std::forward_iterator_tag, MachineInstr, ptrdiff_t>::pointer pointer; - defusechain_iterator(const defusechain_iterator &I) : Op(I.Op) {} defusechain_iterator() : Op(nullptr) {} bool operator==(const defusechain_iterator &x) const { @@ -932,7 +942,6 @@ public: typedef std::iterator<std::forward_iterator_tag, MachineInstr, ptrdiff_t>::pointer pointer; - defusechain_instr_iterator(const defusechain_instr_iterator &I) : Op(I.Op){} defusechain_instr_iterator() : Op(nullptr) {} bool operator==(const defusechain_instr_iterator &x) const { |